| 摘要 |
PROBLEM TO BE SOLVED: To provide a full color toner which ensures a small difference in electrostatic property between a black toner and each color toner in an initial stage and in running printing and continuously gives full color images of good image quality. SOLUTION: The full color toner comprises a black toner and at least one color toner each containing a binder resin and a colorant, wherein the unsaturation degree of the binder resin contained in the black toner (black toner unsaturation degree) is lower than the unsaturation degree of the binder resin contained in any color toner (color toner unsaturation degree), the difference between the black toner unsaturation degree and the lowest color toner unsaturation degree is larger than any difference between color toner unsaturation degrees, and the difference between the black toner unsaturation degree and any color toner unsaturation degree is 0.1-1.5 mol/1,000 g. COPYRIGHT: (C)2005,JPO&NCIPI |
